It’s up to American lawmakers to do it.
The dominoes won’t be falling unless the U.S. (and possibly a couple of other developed markets, e.g. Japan and the U.K.) enact similar legislatio.
I'm not personally advocating for legislation, as I am not a "the government is the answer" type person. I just think Apple as a business needs to let us put the software that we want on the computer in our pocket (and iPad and Vision etc. as well).
There are implementations that won't affect those that don't want it. That's been my big argument/stance from the beginning.
Users could simply have that turned off, and only use the app store. And let users like me, who are not the "average" user (aka I'm a huge nerd), turn it on if they want and download apps straight from the web or alternative stores.
Seems like this may be the biggest topic for the last decade that people have big, differing opinions on.
And yes, I know people will point out that doing this will affect everyone because developers will leave the app store, and people will be "forced" into this because they will have to embrace it to get the apps they need to use.
Well, if that is the case, then it proves that Apple's implementation isn't the best, and alternatives are better. Apple will be forced to innovate or change to address that, and they will want to so that developers do continue to use them.
So I'd argue it will ultimately be a win for consumers but bring on the dislikes and whatever else.